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0b530e281a
The current regex matches the digit **zero** or more times. Therefore, it also matches lines which do not contain a digit. This causes the service to wait (with sleep 2) for cards that don't even exist. Further, it prevents the restore command from failing for these non-existent cards. This patches fixes this issue by requiring **one** or more digits in the `/proc/asound/cards` lines. While at it, I also fixed the local declaration for the loop variable.